CONCENTRATION WAVE IN EXTERNALLY CIRCULAR REACTOR BASED ON WAVELET ANALYSIS

LIU Haifeng; SHI Junmin; WANG Fuchen; GONG Xin; YU Zunhong

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CONCENTRATION WAVE IN EXTERNALLY CIRCULAR REACTOR BASED ON WAVELET ANALYSIS

更新时间：2025-12-10

- CONCENTRATION WAVE IN EXTERNALLY CIRCULAR REACTOR BASED ON WAVELET ANALYSIS
- CIESC Journal Issue 6, (2002)
- 作者机构：
  
  华东理工大学资源与环境工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 2002，
  
  Published：25 June 2002
- 稿件说明：
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LIU Haifeng, SHI Junmin, WANG Fuchen, et al. CONCENTRATION WAVE IN EXTERNALLY CIRCULAR REACTOR BASED ON WAVELET ANALYSIS[J]. CIESC Journal, 2002, (6).
DOI：

LIU Haifeng, SHI Junmin, WANG Fuchen, et al. CONCENTRATION WAVE IN EXTERNALLY CIRCULAR REACTOR BASED ON WAVELET ANALYSIS[J]. CIESC Journal, 2002, (6). DOI：

摘要

应用小波分析研究了外循环反应器浓度波这类非平稳拟周期信号的特征 .首先利用能量最大准则确定浓度波的特征尺度 .其次利用浓度波的特征尺度

重构了浓度波的波形 .最后利用小波分析计算了浓度波波峰处的局部奇异性指数

Abstract

The characteristic of the concentration wave in the RTD of out-circular reactor

which is a nonstationary quasi-periodic signal

has been investigated with wavelet analysis.At first

the characteristic scale of concentration wave was determined with an energy maxima criterion based on wavelet analysis.And we found that the characteristic scale of concentration wave is about directly proportional to the average once through time of the reactor.Then

a reconstruction formula based on wavelet analysis is strictly proved to be capable of reconstructing the concentration wave shape.At last

the local singularity exponents of concentration wave crests are calculated with wavelet analysis.The results show that the local singularity exponents of crest increase with time

and runs to about 2 0

which agree very well with theoretical result.

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